Girl Genius Clipboard

Saturday 9/23/06

Apparently, those who attended Friday's lecture left off with haploid and diploid cells

Haploids: sperm and egg
Diploids: all others

Steps of Meiosis (very cool, super-special eukaryotic division):

1. G1 - a pause (for suspense), preparing to replecate
2. S - growth and DNA replication
3. G2 - growth and final preparation for division
4. M - mitosis

Mitosis (Let's stick with 5 steps); cell division/reproduction

1. Interphase - Meiosis, essentially
2. Prophase - centrioles begin moving to opposite poles; spindle fibers begin extending from poles; nuclear envelope breaks apart; spindal fibers attach to centromer region chromosome
3. Metephase (this step is shorter than the last one and I like it better) - chromosomes align in middle of cell
4. Anaphase - sister chromatids are pulled apart to create daughter chromosomes; each set of daughters are pulled to opposite poles
5. Telophase - nuclear envelope appears around each daughter

Cytokinesis: divions of cytoplasm into two distinct cells

Prokaryotic Cell Division (binary fission; it even sounds gross) - asexual reproduction, producing two identical cells

Color results and the pigments they respresent (from Lab)

• Orange/Yellow-ish: beta cerotene
• Yellow: xanthrophyll
• Blue green/Green: chlorophyll A
• Olive green: chlorophyll B